What is the popular name for mercury(Ⅰ) chloride which is used as a laboratory reagent and as a depolarizer in dry batteries?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Calomel.
Mercury(I) chloride is commonly known as calomel. It is a compound of mercury in which mercury exists in the +1 oxidation state. Calomel is primarily used as a laboratory reagent and in certain medical applications, although its use has decreased over time due to the toxicity of mercury.
It is also used as a depolarizer in dry batteries, especially in older types of mercury batteries.